Tool



Nov. 13, 1923 H. H. KUHN.

TOOL

Filed July 22. 1922 "IIIIIIII'IIII'IIIU m T N E V N ATTORN EY PatentedNov. 13, 19235 tartar rarest arise,

HARRY H. Kenn, or mnnsrrann rnnruors.

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Application filed July 22, 1922. Serial No. 576,795

To all whom it may concern.

Be it known that I. HARRY H. KUHN, a citizen of the United States,residing at Marshall in the county of Clark and State of Illinois, haveinvented new and useful Improvements in Tools, of which the followin isa specification.

My present invention has reference to an automobile engine tool.

In carrying out my invention it is my purpose to produce a tool forremoving carbon from the valve ports of automobile engines of aconstruction whereby the wall of the port as well as the top thereofwill be effectively scraped and the carbon removed from the portreceived in a cup member associated with the device which preventscarbon falling into the intake manifold that might later be drawn upbetween the valve and its seat to cause the sticking of the valve on itsseat.

A still further object is to produce a tool for this purpose thatincludes ashank which may have adjustably arranged thereon a sleeve toadapt the tool for varying sizes of engine ports, said shank havingintegrally formed therewith a cup-like member and having its outer endprovided with a handle to which is pivoted a lever that is looselyassociated with a two-arm member that is slidable through openings inthe shank above the cup, each of said arms being slotted to receivetherein a substantially rectangular scraper element, the scraperelements being removable so that all four edges thereof may be employed,while a spring exerts a pressure between the upper and longer arm of theU-shaped member and the scraper element associated therewith to causethe scrapers to effectively contact with the wall of the port and withthe top of the valve seat after pressure has been exerted upon the leverto arrange the lower scraper in the port, the carbon being removed bythe turning of the tool.

The drawings which accompany and form part of this application,illustrate a satisfactory embodiment of the improvement reduced topractice, and wherein Figure 1 is a view illustrating the operation ofthe tool, parts of theengine block being in section.

Figure 2 is a perspective view of the tool.

Figure 8 is a side elevation thereof with parts broken away and parts insection.

As disclosed by the drawing I make use of a metal member which ispreferably in the nature of a rod and which includes a shank portion 1that has one of its ends rounded upon andconnected to the shank toprovide a handle 2. The shank, at a suitable distance belowthe handlehas formed thereon a cup-shaped member 3 and above the cup-shaped memberthe shank is provided with a pair of spaced openings through which ispassed the arms of a U- shaped member. The upper arm, or the arm nearestthe handle 1, indicated by the numeral 5 is longer than the shorter armwhich is indicated by the numeral 5. Pivotally secured to one side ofthe handle 2, as at 6, there is a lever '7. This lever has its lower endslotted, and passing through the slot is the end or connecting element 8for the arms of the 'U-shaped member. The arms 4 and 5 of the U-shapedmember have their outer ends provided with longitudinal slots, andreceived in these slots are square scraper members 9 and 10respectively. The scrapers are held in the slots by cotter pins 11 and12 that pass through openings in'the arms 4 and 5. Surrounding the upperand longer arm of the U-shaped member and exerting a tension against thescraper 9 and the shank 2 there is a helical spring 13. The spring 13normally swings the lever 7 away from the handle 2 and consequently itis necessary that a pressure be exerted upon the lever to compress thespring and draw the U-shaped member through the openings in the shank topermit of the lower scraper 10 being arranged in the valve port 14 ofthe engine. When so positioned, pressure upon the lever is releasedwhich permits of the expansion of the spring that draws on the U-shapedmember bringing the lower scraper element 10 into frictional contactwith the'wall of the port and the upper scraper member 9 in contactingposition with the valve seat or the engine block directly above theport. The carbonremoved &

members are removably associated with the arms of the U-shaped member,and it is believed that the foregoing description, when taken inconnection with the drawing will fully set forth the construction,operation and advantages of the improvement to those skilled in the artto which this invention relates. 7

Having described the invention, I claim 1. A tool for the purposesetforth including a shank having a handle at one end thereof, a cup-shapedmember integrally formed on the shank, a lever pivota-ltg secured to thehandle, a U-shapedniember slidable through the shank and loosely engagedby the lever, removable scraper members on the arms of the U-shapedmember,

and spring means influencing the U-shaped member in one direction.

2. In a tool for the purpose set forth, a shank, a sleeve adjustablyreceived on one end thereof, a cup-shaped member above the sleeve, ahandle on the opposite end of the shank,- a lever pivotally secured tothe handle, a U-shaped member slidable through the shank above thecup-shaped member and having its outer arm longer than its inner arm, aloose connection between the U-shaped member and the lever, scraperblades removably secured in the outer ends of the arms of the U-shapedmember, and a spring; on the longer arm of the U-shaped member exertinga tension between the shank and the scraper member on said'arm. l

3. A tool for the purpose set-forth, comprisin a shank, a sleeveadjustably ranged thereon, acup-shaped member on the shank above thesleeve, a handle on the shank above the cup-shaped member. a, leverpivotally secured to the handle and having an inner slotted end, aU-sha-ped member having its arms slidable through th shank and itsconnecting element received through the slot in the levernthe outer armot the U-shaped member being longer than the in ner arm thereof, andboth of said :ns be. ing' slotted from their ends, square seraperelements received in the slots and remorablv connected to the arms, anda. spring on the longer arm exerting a tension between the shank and thescraper member on said arm.

In testimony whereofl afiix my signature.

HARRY n. KUHN.

